package base;

import java.util.ArrayList;

/**
 *  Copyright (c) 1999-2011, Ecole des Mines de Nantes
 *  All rights reserved.
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *      * Neither the name of the Ecole des Mines de Nantes nor the
 *        names of its contributors may be used to endorse or promote products
 *        derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * Created by IntelliJ IDEA. User: njussien Date: 30/11/12 Time: 10:25
 */
public class Atome extends Formule {

	private String nom;
	private int arite;
	private Terme[] operandes;

	// ///////////////
	// CONSTRUCTOR //
	// ///////////////

	public Atome(String nom, Terme... operandes) {
		this.nom = nom;
		this.arite = operandes.length;
		this.operandes = operandes;
	}

	// ///////////
	// METHODS //
	// ///////////

	@Override
	public Formule negation() {
		return new Non(this);
	}

	@Override
	public Formule descendreNon() {
		return this;
	}

	@Override
	public Formule enleveEquImp() {
		return this;
	}

	@Override
	public boolean contains(Variable var) {
		return false;
	}

	@Override
	public void substituer(Variable var, Terme terme) {

		for (int i = 0; i < arite; i++) {

			if (operandes[i] instanceof Variable && operandes[i].getName().equals(var.getName())) {
				operandes[i] = terme;
			} else if (operandes[i] instanceof Fonction) {
				operandes[i].substituer(var, terme);
			}

		}

	}

	public void renommer() {
	}

	public Formule remonterQuantificateurs() {
		return this;
	}

	@Override
	public Formule toConjonctive() {
		return this;
	}

	public String toString() {

		String ret = "[Atome:" + nom + "(";
		for (int i = 0; i < operandes.length - 1; i++)
			ret += operandes[i].toString() + ",";

		if (arite != 0) {
			ret += operandes[arite - 1];
		}
		ret += ")]";
		return ret;
	}

	public boolean isTheSame(Atome a) {
		return nom.equals(a.nom);
	}

	@Override
	public boolean contains(Atome a) {
		// TODO Auto-generated method stub
		return a.nom.equals(nom);
	}

	@Override
	public boolean containsNegative(Atome a) {
		// TODO Auto-generated method stub
		return false;
	}

	public boolean equals(Object o) {
		if (!(o instanceof Atome)) {
			return false;
		}
		Atome a = (Atome) o;
		if (a.nom.equals(nom) && a.operandes.length == operandes.length) {

			for (int i = 0; i < operandes.length; i++) {
				if (!operandes[i].equals(a.operandes[i])) {

					return false;
				}
			}

			return true;

		} else
			return false;

	}

	public Atome supprimer(Atome a) {
		if (a.equals(this)) {
			return null;
		} else {
			return this;
		}
	}

	public Atome supprimer(Non a) {
		return this;
	}

	public ArrayList<Formule> reccupererAllAtomeNon() {
		ArrayList<Formule> ret = new ArrayList<Formule>();
		ret.add(new Atome(nom, operandes));
		return ret;
	}

	public Formule copy() {
		Terme[] operandesCopy = new Terme[operandes.length];
		for (int i = 0; i < operandes.length; i++)
			operandesCopy[i] = operandes[i].copy();

		return new Atome(nom, operandesCopy);

	}

	// ///////////////////////
	// GETTERS AND SETTERS //
	// ///////////////////////

	public Terme[] getOperandes() {
		return operandes;
	}

	public int getArite() {
		return arite;
	}

}
